Blood sensor and blood test apparatus having the same

Abstract

A blood sensor to be used in a blood test apparatus, more specifically speaking, a blood sensor which can be easily attached to a blood test apparatus and detached therefrom. Namely, a blood sensor to be detachably attached to a blood test apparatus having a plural number of connectors, which comprises: a supply channel to which blood is supplied; a detection section provided in the supply channel; an electrode system formed in an area including the detection section; a plural number of connection terminals electrically connected to each electrode of the electrode system respectively; and a standard electrode serving as a standard for differentiating these connection terminals. The connectors are connected respectively to the connection terminals and the standard electrode of the blood sensor having been attached to a definite position of the blood test apparatus.

1. A blood sensor that is detachably attached to a blood test apparatus having a plurality of connectors, comprising:
 a base plate; 
 a storing part that is provided in the base plate and having an opening; 
 a supply channel having one end communicating with the storing part such that blood within the storing part is supplied to flow into the supply channel by capillary action; 
 a detecting section that is provided in the supply channel; 
 an air hole that communicates with the supply channel; 
 an electrode system including a plurality of electrodes that is provided in an area including the detecting section; 
 a plurality of connection terminals that are electrically connected with each electrode of the electrode system; 
 a reference terminal that serves as a reference for identifying each of the plurality of connection terminals, wherein 
 the plurality of connectors are connected to the plurality of connection terminals and the reference terminal of the blood sensor attached at a predetermined position in the blood test apparatus, respectively. 
 
     
     
       2. The blood sensor according to  claim 1 , wherein a resistance value between the reference terminal and one of the plurality of connection terminals is adjusted to a predetermined value. 
     
     
       3. The blood sensor according to  claim 1 , wherein the reference terminal is insulated from one of the plurality of connection terminals. 
     
     
       4. The blood sensor according to  claim 1 , wherein the reference terminal is electrically connected to one of the plurality of connection terminals via a conductor. 
     
     
       5. The blood sensor according to  claim 1 , comprising two or more reference terminals that are electrically connected with each other via a conductor and insulted from all of the plurality of connection terminals. 
     
     
       6. The blood sensor according to  claim 1 , wherein:
 the plurality of connectors contact with periphery of an axis of the blood sensor attached at the predetermined position; 
 the blood sensor comprises an attaching guide for attaching the blood sensor to the predetermined position in the blood test apparatus; and 
 the attaching guide adjusts a rotation angle with respect to the axis of the attached blood sensor to a predetermined angle. 
 
     
     
       7. The blood sensor according to  claim 1 , wherein:
 the plurality of connectors contact with periphery of an axis of the blood sensor attached at the predetermined position; 
 the blood sensor comprises an attaching guide for attaching the blood sensor at the predetermined position in the blood test apparatus; and 
 the attaching guide adjusts a rotation angle with respect to the axis of the attached blood sensor to angle other than a predetermined angle. 
 
     
     
       8. The blood sensor according to  claim 1 , wherein the blood sensor is a round or a polygon. 
     
     
       9. The blood sensor according to  claim 1 , wherein a negative pressure may be supplied to the storing part through the air hole. 
     
     
       10. The blood sensor according to  claim 1 , wherein the blood sensor is integrated with a holder to configure a blood sampling cartridge. 
     
     
       11. The blood sensor according to  claim 1 , wherein the blood sensor is integrated with a holder and a lancet supported in the holder to configure a blood sampling cartridge, wherein the lancet is allowed to move freely inside the holder.